J98.51 - Mediastinitis

Version 2023
ICD-10:J98.51
Short Description:Mediastinitis
Long Description:Mediastinitis
Status: Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Diseases of the respiratory system (J00–J99)
    • Other diseases of the respiratory system (J96-J99)
      • Other respiratory disorders (J98)

J98.51 is a billable ICD-10 code used to specify a medical diagnosis of mediastinitis. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Clinical Information

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to this diagnosis code:


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

Index to Diseases and Injuries References

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for this diagnosis code are found in the injuries and diseases index:

Replacement Code

J9851 replaces the following previously assigned ICD-10 code(s):

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
J98.51519.2 - Mediastinitis

Code History